Version:           4.1.80 (using Devel)
OS:                Linux
Installed from:    Compiled sources

I am sorry that I do not have very detailed information.
My laptop resumed from s2ram. There were no sounds until the crash (might have been desired as I only worked in konsole...)

Then "suddenly" kmix crashed... this is the BT:

Anwendung: KMix (kmix), Signal SIGABRT

Thread 1 (Thread 0xb65076c0 (LWP 5769)):
[KCrash Handler]
#6  0xb80a4430 in __kernel_vsyscall ()
#7  0xb7ee9880 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb7eeb248 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb7675795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb7675872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb7675915 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb7aa1d5a in Solid::DeviceManagerPrivate::_k_deviceAdded (this=0x9cdf4e8, udi=@0x9f0d6a8) at /build/buildd/kde4libs-4.1.80/solid/solid/devicemanager.cpp:164
#13 0xb7aa1e2f in Solid::DeviceManagerPrivate::qt_metacall (this=0x9cdf4e8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfba3bbc)
    at /build/buildd/kde4libs-4.1.80/obj-i486-linux-gnu/solid/solid/devicemanager_p.moc:72
#14 0xb7782a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0xb77837e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb7ab3e93 in Solid::Ifaces::DeviceManager::deviceAdded (this=0x9cdf3f8, _t1=@0x9f0d6a8) at /build/buildd/kde4libs-4.1.80/obj-i486-linux-gnu/solid/solid/ifaces/devicemanager.moc:79
#17 0xb7ada9ee in Solid::Backends::Hal::HalManager::slotDeviceAdded (this=0x9cdf3f8, udi=@0x9f0d6a8) at /build/buildd/kde4libs-4.1.80/solid/solid/backends/hal/halmanager.cpp:213
#18 0xb7adaa8a in Solid::Backends::Hal::HalManager::qt_metacall (this=0x9cdf3f8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfba3d78)
    at /build/buildd/kde4libs-4.1.80/obj-i486-linux-gnu/solid/solid/backends/hal/halmanager.moc:70
#19 0xb75da26e in ?? () from /usr/lib/libQtDBus.so.4
#20 0xb75e1627 in ?? () from /usr/lib/libQtDBus.so.4
#21 0xb777d771 in QObject::event () from /usr/lib/libQtCore.so.4
#22 0xb6dab8ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#23 0xb6db372e in QApplication::notify () from /usr/lib/libQtGui.so.4
#24 0xb7d03c6d in KApplication::notify (this=0x9c0ddd0, receiver=0x9cdf3f8, event=0x9f0d728) at /build/buildd/kde4libs-4.1.80/kdeui/kernel/kapplication.cpp:307
#25 0xb776de61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#26 0xb776eae5 in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4
#27 0xb776ecdd in QCoreApplication::sendPostedEvents () from /usr/lib/libQtCore.so.4
#28 0xb779882f in ?? () from /usr/lib/libQtCore.so.4
#29 0xb66fa6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb66fdda3 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0xb66fdf61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0xb7798478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#33 0xb6e45ea5 in ?? () from /usr/lib/libQtGui.so.4
#34 0xb776c52a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#35 0xb776c6ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#36 0xb776eda5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#37 0xb6dab767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#38 0xb802eabb in kdemain () from /usr/lib/libkdeinit4_kmix.so
#39 0x080485a2 in _start ()